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explain me what mistake i am doing in my model

Posted 25 juil. 2017, 01:26 UTC−4 1 Reply

Deepak Punetha
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Hello
I need help, while simulating my model, I have got following error. Could you please explain me what mistake i am doing in my model.

- Feature: Stationary Solver 1 (sol1/s1)
Failed to find a solution.
Singular matrix.

There are 4113 void equations (empty rows in matrix) for the variable comp1.V2.
at coordinates: (3.93183e-005,4.85007e-005,7e-006), (3.86366e-005,4.90014e-005,7e-006), (3.93183e-005,4.95007e-005,7e-006), (3.90385e-005,5e-005,7e-006), (3.83568e-005,4.95007e-005,7e-006), ...
and similarly for the degrees of freedom (empty columns in matrix).
Returned solution is not converged.
1 Reply Last Post 25 juil. 2017, 02:15 UTC−4
Jens Krause
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Posted: 7 years ago 25 juil. 2017, 02:15 UTC−4
" Singular matrix." means you have not enough (or too many) constraints.

Here it is easy because the message tells you that the variable V2 is
unconstrained.

I cannot tell you more without the model. Is V2 an electric potential? Do
you have a grounding?

Regards

Jens
" Singular matrix." means you have not enough (or too many) constraints. Here it is easy because the message tells you that the variable V2 is unconstrained. I cannot tell you more without the model. Is V2 an electric potential? Do you have a grounding? Regards Jens

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